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/linux-6.8/Documentation/devicetree/bindings/serial/
Dserial.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Rob Herring <robh@kernel.org>
11 - Greg Kroah-Hartman <gregkh@linuxfoundation.org>
18 Each enabled UART may have an optional "serialN" alias in the "aliases" node,
19 where N is the port number (non-negative decimal integer) as printed on the
28 cts-gpios:
32 the UART's CTS line.
34 dcd-gpios:
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Dfsl-imx-uart.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/serial/fsl-imx-uart.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Freescale i.MX Universal Asynchronous Receiver/Transmitter (UART)
10 - Fabio Estevam <festevam@gmail.com>
15 - const: fsl,imx1-uart
16 - const: fsl,imx21-uart
17 - items:
18 - enum:
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/linux-6.8/drivers/extcon/
Dextcon-max8997.c1 // SPDX-License-Identifier: GPL-2.0+
3 // extcon-max8997.c - MAX8997 extcon driver to support MAX8997 MUIC
8 #include <linux/devm-helpers.h>
18 #include <linux/mfd/max8997-private.h>
19 #include <linux/extcon-provider.h>
22 #define DEV_NAME "max8997-muic"
39 { MAX8997_MUICIRQ_ADCError, "muic-ADCERROR" },
40 { MAX8997_MUICIRQ_ADCLow, "muic-ADCLOW" },
41 { MAX8997_MUICIRQ_ADC, "muic-ADC" },
42 { MAX8997_MUICIRQ_VBVolt, "muic-VBVOLT" },
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Dextcon-max77693.c1 // SPDX-License-Identifier: GPL-2.0+
3 // extcon-max77693.c - MAX77693 extcon driver to support MAX77693 MUIC
8 #include <linux/devm-helpers.h>
18 #include <linux/mfd/max77693-common.h>
19 #include <linux/mfd/max77693-private.h>
20 #include <linux/extcon-provider.h>
24 #define DEV_NAME "max77693-muic"
30 * extcon-max77693 driver use 'default_init_data' to bring up base operation
35 /* STATUS2 - [3]ChgDetRun */
39 /* INTMASK1 - Unmask [3]ADC1KM,[0]ADCM */
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Dextcon-max14577.c1 // SPDX-License-Identifier: GPL-2.0+
3 // extcon-max14577.c - MAX14577/77836 extcon driver to support MUIC
9 #include <linux/devm-helpers.h>
16 #include <linux/mfd/max14577-private.h>
17 #include <linux/extcon-provider.h>
47 { MAX14577_IRQ_INT1_ADC, "muic-ADC" },
48 { MAX14577_IRQ_INT1_ADCLOW, "muic-ADCLOW" },
49 { MAX14577_IRQ_INT1_ADCERR, "muic-ADCError" },
50 { MAX14577_IRQ_INT2_CHGTYP, "muic-CHGTYP" },
51 { MAX14577_IRQ_INT2_CHGDETRUN, "muic-CHGDETRUN" },
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Dextcon-max77843.c1 // SPDX-License-Identifier: GPL-2.0+
3 // extcon-max77843.c - Maxim MAX77843 extcon driver to support
9 #include <linux/extcon-provider.h>
13 #include <linux/mfd/max77693-common.h>
14 #include <linux/mfd/max77843-private.h>
141 { MAX77843_MUIC_IRQ_INT1_ADC, "MUIC-ADC" },
142 { MAX77843_MUIC_IRQ_INT1_ADCERROR, "MUIC-ADC_ERROR" },
143 { MAX77843_MUIC_IRQ_INT1_ADC1K, "MUIC-ADC1K" },
144 { MAX77843_MUIC_IRQ_INT2_CHGTYP, "MUIC-CHGTYP" },
145 { MAX77843_MUIC_IRQ_INT2_CHGDETRUN, "MUIC-CHGDETRUN" },
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/linux-6.8/drivers/iio/imu/bno055/
DKconfig1 # SPDX-License-Identifier: GPL-2.0
9 tristate "Bosch BNO055 attached via UART"
14 Enable this to support Bosch BNO055 IMUs attached via UART.
20 tristate "Bosch BNO055 attached via I2C bus"
25 Enable this to support Bosch BNO055 IMUs attached via I2C bus.
/linux-6.8/drivers/tty/serial/8250/
D8250_parisc.c1 // SPDX-License-Identifier: GPL-2.0+
5 * (c) Copyright Matthew Wilcox <willy@debian.org> 2001-2002
18 #include <asm/parisc-device.h>
25 struct uart_8250_port uart; in serial_init_chip() local
30 if (!dev->irq && (dev->id.sversion == 0xad)) in serial_init_chip()
31 dev->irq = iosapic_serial_irq(dev); in serial_init_chip()
34 if (!dev->irq) { in serial_init_chip()
40 if (parisc_parent(dev)->id.hw_type != HPHW_IOA) in serial_init_chip()
41 dev_info(&dev->dev, in serial_init_chip()
44 (unsigned long long)dev->hpa.start); in serial_init_chip()
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/linux-6.8/Documentation/devicetree/bindings/net/
Dmediatek-bluetooth.txt1 MediaTek SoC built-in Bluetooth Devices
4 This device is a serial attached device to BTIF device and thus it must be a
5 child node of the serial node with BTIF. The dt-bindings details for BTIF
10 - compatible: Must be
11 "mediatek,mt7622-bluetooth": for MT7622 SoC
12 - clocks: Should be the clock specifiers corresponding to the entry in
13 clock-names property.
14 - clock-names: Should contain "ref" entries.
15 - power-domains: Phandle to the power domain that the device is part of
20 compatible = "mediatek,mt7622-btif",
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Dti,bluetooth.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - David Lechner <david@lechnology.com>
14 attached TI Bluetooth devices. The following chips are included in this
20 TI WiLink devices have a UART interface for providing Bluetooth, FM radio,
27 This bindings follows the UART slave device binding in ../serial/serial.yaml.
32 - ti,cc2560
33 - ti,wl1271-st
34 - ti,wl1273-st
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Dbroadcom-bluetooth.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/net/broadcom-bluetooth.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Linus Walleij <linus.walleij@linaro.org>
13 This binding describes Broadcom UART-attached bluetooth chips.
18 - brcm,bcm20702a1
19 - brcm,bcm4329-bt
20 - brcm,bcm4330-bt
21 - brcm,bcm4334-bt
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/linux-6.8/drivers/platform/x86/
Dserdev_helpers.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * In some cases UART attached devices which require an in kernel driver,
4 * e.g. UART attached Bluetooth HCIs are described in the ACPI tables
7 * This causes the kernel to create a /dev/ttyS# char-device for the UART
8 * instead of creating an in kernel serdev-controller + serdev-device pair
12 * create a serdev-controller device for these UARTs instead of a /dev/ttyS#.
14 * Instantiating the actual serdev-device to bind to is up to pdx86 code,
15 * this header provides a helper for getting the serdev-controller device.
35 ctrl_adev = acpi_dev_get_first_match_dev(serial_ctrl_hid, serial_ctrl_uid, -1); in get_serdev_controller()
37 pr_err("error could not get %s/%s serial-ctrl adev\n", in get_serdev_controller()
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/linux-6.8/Documentation/devicetree/bindings/net/bluetooth/
Dnxp,88w8987-bt.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/net/bluetooth/nxp,88w8987-bt.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 This binding describes UART-attached NXP bluetooth chips. These chips
11 are dual-radio chips supporting WiFi and Bluetooth. The bluetooth
12 works on standard H4 protocol over 4-wire UART. The RTS and CTS lines
14 asserts break signal over UART-TX line to put the chip into power save
15 state. De-asserting break wakes up the BT chip.
18 - Neeraj Sanjay Kale <neeraj.sanjaykale@nxp.com>
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/linux-6.8/drivers/platform/chrome/
Dcros_ec_uart.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * UART interface for ChromeOS Embedded Controller
5 * Copyright 2020-2022 Google LLC.
23 * EC sends contiguous bytes of response packet on UART AP RX.
40 * struct response_info - Encapsulate EC response related
51 * @status: Re-init to 0 before sending a cmd. Updated to 1 when
67 * struct cros_ec_uart - information about a uart-connected EC
69 * @serdev: serdev uart device we are connected to.
70 * @baudrate: UART baudrate of attached EC device.
71 * @flowcontrol: UART flowcontrol of attached device.
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/linux-6.8/Documentation/networking/device_drivers/can/
Dcan327.rst1 .. SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
7 --------
14 -----------
26 -------------
33 order to fake full-duplex operation.
36 enough to implement simple request-response protocols (such as OBD II),
39 Most ELM327s come as nondescript serial devices, attached via USB or
50 -----------
59 ----------------------------------
65 be attached on a command prompt as follows::
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/linux-6.8/drivers/bluetooth/
DKconfig1 # SPDX-License-Identifier: GPL-2.0
105 tristate "HCI UART driver"
110 Bluetooth HCI UART driver.
113 UART based Bluetooth PCMCIA and CF devices like Xircom Credit Card
116 Say Y here to compile support for Bluetooth UART devices into the
125 bool "UART (H4) protocol support"
128 UART (H4) is serial protocol for communication between Bluetooth
130 with UART interface, including PCMCIA and CF cards.
132 Say Y here to compile support for HCI UART (H4) protocol.
135 tristate "UART Nokia H4+ protocol support"
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/linux-6.8/Documentation/devicetree/bindings/ptp/
Dtimestamper.txt3 This binding supports non-PHY devices that snoop the MII bus and
9 Non-PHY MII time stamping drivers typically talk to the control
10 interface over another bus like I2C, SPI, UART, or via a memory mapped
20 compatible = "ines,ptp-ctrl";
26 ethernet-phy@1 {
34 ethernet-phy@2 {
40 In this example, time stamps from the MII bus attached to phy@1 will
/linux-6.8/drivers/gpio/
Dgpio-exar.c1 // SPDX-License-Identifier: GPL-2.0-only
25 * The Device Configuration and UART Configuration Registers
26 * for each UART channel take 1KB of memory address space.
50 unsigned int pin = exar_gpio->first_pin + (offset % 16); in exar_offset_to_sel_addr()
54 return addr + (cascaded ? exar_gpio->cascaded_offset : 0); in exar_offset_to_sel_addr()
60 unsigned int pin = exar_gpio->first_pin + (offset % 16); in exar_offset_to_lvl_addr()
64 return addr + (cascaded ? exar_gpio->cascaded_offset : 0); in exar_offset_to_lvl_addr()
70 unsigned int pin = exar_gpio->first_pin + (offset % 16); in exar_offset_to_bit()
81 if (regmap_test_bits(exar_gpio->regmap, addr, BIT(bit))) in exar_get_direction()
93 return !!(regmap_test_bits(exar_gpio->regmap, addr, BIT(bit))); in exar_get_value()
[all …]
/linux-6.8/Documentation/devicetree/bindings/mfd/
Dgoogle,cros-ec.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/mfd/google,cros-ec.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Benson Leung <bleung@chromium.org>
11 - Guenter Roeck <groeck@chromium.org>
22 - description:
24 const: google,cros-ec-i2c
25 - description:
27 const: google,cros-ec-spi
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/linux-6.8/Documentation/devicetree/bindings/gnss/
Du-blox,neo-6m.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/gnss/u-blox,neo-6m.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: U-blox GNSS Receiver
10 - $ref: gnss-common.yaml#
13 - Johan Hovold <johan@kernel.org>
16 The U-blox GNSS receivers can use UART, DDC (I2C), SPI and USB interfaces.
21 - u-blox,neo-6m
22 - u-blox,neo-8
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/linux-6.8/Documentation/trace/coresight/
Dcoresight-ect.rst1 .. SPDX-License-Identifier: GPL-2.0
11 --------------------
21 0 C 0----------->: : +======>(other CTI channel IO)
22 0 P 0<-----------: : v
24 0000000 : CTI :<=========>*CTM*<====>: CTI :---+
25 ####### in_trigs : : (id 0-3) ***** ::::::: v
26 # ETM #----------->: : ^ #######
27 # #<-----------: : +---# ETR #
31 channels. When an input trigger becomes active, the attached channel will
32 become active. Any output trigger attached to that channel will also
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/linux-6.8/Documentation/devicetree/bindings/bus/
Dsocionext,uniphier-system-bus.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/bus/socionext,uniphier-system-bus.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 The UniPhier System Bus is an external bus that connects on-board devices to
11 the UniPhier SoC. It is a simple (semi-)parallel bus with address, data, and
16 within each bank to the CPU-viewed address. The needed setup includes the
21 - Masahiro Yamada <yamada.masahiro@socionext.com>
25 const: socionext,uniphier-system-bus
30 "#address-cells":
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/linux-6.8/drivers/bus/
DKconfig1 # SPDX-License-Identifier: GPL-2.0
37 Driver for the Broadcom Set Top Box System-on-a-chip internal bus
42 bool "Baikal-T1 APB-bus driver"
46 Baikal-T1 AXI-APB bridge is used to access the SoC subsystem CSRs.
53 errors counter. The counter and the APB-bus operations timeout can be
57 bool "Baikal-T1 AXI-bus driver"
61 AXI3-bus is the main communication bus connecting all high-speed
62 peripheral IP-cores with RAM controller and with MIPS P5600 cores on
63 Baikal-T1 SoC. Traffic arbitration is done by means of DW AMBA 3 AXI
87 Driver to enable I/O access to devices attached to the Low Pin
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/linux-6.8/net/nfc/nci/
Duart.c1 // SPDX-License-Identifier: GPL-2.0-or-later
7 * Copyright (C) 2000-2001 Qualcomm Incorporated
8 * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
9 * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org>
41 struct sk_buff *skb = nu->tx_skb; in nci_uart_dequeue()
44 skb = skb_dequeue(&nu->tx_q); in nci_uart_dequeue()
46 nu->tx_skb = NULL; in nci_uart_dequeue()
53 if (nu->tx_skb) in nci_uart_queue_empty()
56 return skb_queue_empty(&nu->tx_q); in nci_uart_queue_empty()
61 if (test_and_set_bit(NCI_UART_SENDING, &nu->tx_state)) { in nci_uart_tx_wakeup()
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/linux-6.8/drivers/tty/serial/
Dxilinx_uartps.c1 // SPDX-License-Identifier: GPL-2.0+
3 * Cadence UART driver (found in Xilinx Zynq)
5 * Copyright (c) 2011 - 2014 Xilinx, Inc.
7 * This driver has originally been pushed by Xilinx using a Zynq-branding. This
39 MODULE_PARM_DESC(rx_trigger_level, "Rx trigger level, 1-63 bytes");
44 MODULE_PARM_DESC(rx_timeout, "Rx timeout, 1-255");
46 /* Register offsets for the UART. */
87 #define CDNS_UART_MR_CLKSEL 0x00000001 /* Pre-scalar selection */
187 * struct cdns_uart - device data
188 * @port: Pointer to the UART port
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